Brinkmann coordinates

Brinkmann coordinates are a specific type of coordinate system used primarily in the context of General Relativity to describe spacetimes, particularly in the study of asymptotically flat spacetimes. Named after Max Brinkmann, these coordinates are useful for simplifying the analysis of certain gravitational configurations, such as those involving gravitational waves and black holes. In Brinkmann coordinates, the metric can usually be expressed in a form that emphasizes certain geometric properties of the spacetime.